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Nystagmus is a condition that causes involuntary, rapid movement of one or both eyes. It often occurs with vision problems.
Blindness is the inability to see anything, even light. If you're partially blind, you have limited vision. For example, you may have blurry vision or the inability to distinguish the shapes of objects.
Photophobia is a condition in which bright lights hurt your eyes. Another name for this condition is light sensitivity. It's a common symptom that's associated with several different conditions, ranging from minor irritations to serious medical em...